<?php // $Id: import.php,v 1.46.2.4 2008/09/15 14:21:02 thepurpleblob Exp $
/**
 * Import quiz questions into the given category
 *
 * @author Martin Dougiamas, Howard Miller, and many others.
 *		 {@link http://moodle.org}
 * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
 * @package questionbank
 * @subpackage importexport
 */

	require_once("../config.php");
	require_once("editlib.php");
	require_once($CFG->libdir . '/uploadlib.php');
	require_once($CFG->libdir . '/questionlib.php');
	require_once("import_form.php");

	list($thispageurl, $contexts, $cmid, $cm, $module, $pagevars) = question_edit_setup('import', false, false);

   // get display strings
	$txt = new stdClass();
	$txt->importquestions = get_string("importquestions", "quiz");

	list($catid, $catcontext) = explode(',', $pagevars['cat']);
	if (!$category = get_record("question_categories", "id", $catid)) {
		print_error('nocategory','quiz');
	}

	//this page can be called without courseid or cmid in which case
	//we get the context from the category object.
	if ($contexts === null) { // need to get the course from the chosen category
		$contexts = new question_edit_contexts(get_context_instance_by_id($category->contextid));
		$thiscontext = $contexts->lowest();
		if ($thiscontext->contextlevel == CONTEXT_COURSE){
			require_login($thiscontext->instanceid, false);
		} elseif ($thiscontext->contextlevel == CONTEXT_MODULE){
			list($module, $cm) = get_module_from_cmid($thiscontext->instanceid);
			require_login($cm->course, false, $cm);
		}
		$contexts->require_one_edit_tab_cap($edittab);
	}

	// ensure the files area exists for this course
	make_upload_directory("$COURSE->id");

	$import_form = new question_import_form($thispageurl, array('contexts'=>$contexts->having_one_edit_tab_cap('import'),
														'defaultcategory'=>$pagevars['cat']));

	if ($import_form->is_cancelled()){
		redirect($thispageurl);
	}
	//==========
	// PAGE HEADER
	//==========

	if ($cm!==null) {
		$strupdatemodule = has_capability('moodle/course:manageactivities', get_context_instance(CONTEXT_COURSE, $COURSE->id))
			? update_module_button($cm->id, $COURSE->id, get_string('modulename', $cm->modname))
			: "";
		$navlinks = array();
		$navlinks[] = array('name' => get_string('modulenameplural', $cm->modname), 'link' => "$CFG->wwwroot/mod/{$cm->modname}/index.php?id=$COURSE->id", 'type' => 'activity');
		$navlinks[] = array('name' => format_string($module->name), 'link' => "$CFG->wwwroot/mod/{$cm->modname}/view.php?id={$cm->id}", 'type' => 'title');
		$navlinks[] = array('name' => $txt->importquestions, 'link' => '', 'type' => 'title');
		$navigation = build_navigation($navlinks);
		print_header_simple($txt->importquestions, '', $navigation, "", "", true, $strupdatemodule);

		$currenttab = 'edit';
		$mode = 'import';
		${$cm->modname} = $module;
		include($CFG->dirroot."/mod/$cm->modname/tabs.php");
	} else {
		// Print basic page layout.
		$navlinks = array();
		$navlinks[] = array('name' => $txt->importquestions, 'link' => '', 'type' => 'title');
		$navigation = build_navigation($navlinks);

		print_header_simple($txt->importquestions, '', $navigation);
		// print tabs
		$currenttab = 'import';
		include('tabs.php');
	}


	// file upload form sumitted
	if ($form = $import_form->get_data()) {

		// file checks out ok
		$fileisgood = false;

		// work out if this is an uploaded file
		// or one from the filesarea.
		if (!empty($form->choosefile)) {
			$importfile = "{$CFG->dataroot}/{$COURSE->id}/{$form->choosefile}";
			$realfilename = $form->choosefile;
			if (file_exists($importfile)) {
				$fileisgood = true;
			} else {
				print_error('uploadproblem', 'moodle', $form->choosefile);
			}
		} else {
			// must be upload file
			$realfilename = $import_form->get_importfile_realname();
			if (!$importfile = $import_form->get_importfile_name()) {
				print_error('uploadproblem', 'moodle');
			}else {
				$fileisgood = true;
			}
		}

		// process if we are happy file is ok
		if ($fileisgood) {

			if (! is_readable("format/$form->format/format.php")) {
				print_error('formatnotfound','quiz', $form->format);
			}

			require_once("format.php");  // Parent class
			require_once("format/$form->format/format.php");

			$classname = "qformat_$form->format";
			$qformat = new $classname();

			// load data into class
			$qformat->setCategory($category);
			$qformat->setContexts($contexts->having_one_edit_tab_cap('import'));
			$qformat->setCourse($COURSE);
			$qformat->setFilename($importfile);
			$qformat->setRealfilename($realfilename);
			$qformat->setMatchgrades($form->matchgrades);
			$qformat->setCatfromfile(!empty($form->catfromfile));
			$qformat->setContextfromfile(!empty($form->contextfromfile));
			$qformat->setStoponerror($form->stoponerror);

			// Do anything before that we need to
			if (! $qformat->importpreprocess()) {
				print_error('importerror', 'quiz', $thispageurl->out());
			}

			// Process the uploaded file
			if (! $qformat->importprocess()) {
				print_error('importerror', 'quiz', $thispageurl->out());
			}

			// In case anything needs to be done after
			if (! $qformat->importpostprocess()) {
				print_error('importerror', 'quiz', $thispageurl->out());
			}

			echo "<hr />";
			print_continue("edit.php?".($thispageurl->get_query_string(array('category'=>"{$qformat->category->id},{$qformat->category->contextid}"))));
			print_footer($COURSE);
			exit;
		}
	}

	print_heading_with_help($txt->importquestions, "import", "quiz");

	/// Print upload form
	$import_form->display();
	print_footer($COURSE);

?>
